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Disposal process

Information on what to expect when you get to the septage disposal facility, including the process of disposing of septage and amenities we offer at the facility.

The process of disposing of septage at our treatment facility at South Treatment plant is pretty simple. We have trucks weigh in before dumping a load and weigh out before leaving the facility. If you’re disposing of domestic or non-domestic septage from a commercial source, you must record the estimated volume pumped from the source on the King County Hauled Waste Certification Form prior to dumping a load. 

Here are some of our facility’s amenities: